Controlling device for hoisting apparatus.



0. NOTBOHM an. BIGEMANN. CONTROLLING DEVICE FOR HOISTING APPARATUS. I

' APPLIOATION FILED APBHB, 1907.

Patented Sept. 29, 1908. 2 SHEETS-SHEET L mm Q N A N W) E, Q

Sq NW L w m H 25.15%:

APPLICATION FILED APR. 8, 1907.

Patented Sept. 29, 1908.

2 SHEETS-SHEET 2. I

llll

- is prevented.

UNHTED STATES PATENT @FFKQE.

CARL NOTBOHM, OF GATERNBERG,

AND, HEINRICH EIGEMANN, OF ESSEN-ON-THE-RUHR,

GERMANY.

CONTROLLING DEVICE FOR HOISTING- APPARATUS.

Specification of Letters Patent.

Patented Sept. 2a, 1908.

Application sled April s, 1967. Serial No. 367,059.

for use in connection with hoisting apparatus the object of the invention being to provide a controlling device adapted to arrest operation of the hoisting engine at predetermined times, preferably when the member hoisted or lowered has reached the limit of its travel.

The invention will be more fully described in connection with the accompanying drawingsand will be more particularly, pointed A out and ascertained in and by the appended claims.

In the drawings Figure 1 is'a view in side elevation of a controlling device embodying the main features of. our invention. Fig. 2 is a plan view thereof showing parts broken away and certain of the parts in section. Fig. 3 is a I line 33 of Fig. 4. Fig. 4 is a sectional view on line. 4-4 of Fig. 1.. 1

Like numerals of reference designate similar parts throughout the different figures of the drawingsl 3 i The invention will now be described in connection with it will lie understood that the invention is not to be limited to such specific showing ex cept for such limitations as the claimsimport.

he invention is illustrated in one application, i. (1., in connection with a hoisting apparatus, although it may be utilized other capacities, and as shown andreferring gcnerally to the invention disclosed the same con sists n the provision of a master operating member in driving connection with the hOlStn mg engine and a masterelement adapted to be operated by said member which element is provided with means associated with the reversing gear controller and the throttle of the. engine whereby upon predetermined movement of said element the means operate to, retract the controller to a non-operating or neutral position and serve to close the throttle whereby further operation of the engine The mvention however may fore these terms are not to horizontal sectional View taken. on'

the specific form shown but connecting rod 28.

consist either in means associated with said master element for controlling the reversing gear controller or for controlling the throttle or both, the said invention in either or all of these capacities bein highly efiicient and serviceable: It will he further understood that the terms throttle and fcontroller are herein used in connection with the .spe-

cific application of our mvention 'shown'in connection with a hoisting apparatus merely for the purposes of a conventional illustration of one of the uses of our invention and therebe understood as applying specifically to a valve for controlling t e su ply of pressure fluid to an engine oralever or controlling the reversing gear of an engine.

As shown thestructure embodying our invention comprises a base 1 provided with supporting standards 2 and 3 affording bearings for a slidably mounted controller rod 23 and similarly mounted throttle rods 41 and 42. Said standards also afford bearings for a master operating member which is specific- I ally shown in the form of a-threaded rod 4 rotatably and non slidably mounted and adapted to other primary operating mechanism with which the device of our invention is adaptedto be associated. As shown 63 may be considered the crank shaft of an engine and said shaft is provided with a miter gear 6 meshing with a miter 5 mounted upon the master screw 4 whereby the latter 1s continuously driven by the engine in either direction in which the latter. may be operated. The rebe driven from the engine or verslng gear of the engine, not herein shown is associated with the controller, which as shown consists 'of a'lever 26, by means of a the engine is conventionally shown at 48 and maybe connected in any desired manner with the engine.

, Having now generally set forth the invention and the manner in which it is associated with the mechanism which it is designed to control we wil first specifically describe the means whereby the controller lever 26 is associated with the invention. Said lever 26 is mounted at 27 and is provided with the usual quadrant 64 which latter however is not provided with notches for engagement with the usual locking device 65, the latter operating on the continuously smooth surface of the quadrant, 25 designates a conthe master screw necting rod which is connected with the lever 26 and one end of a lever 24 pivoted at 66, the other end of which is connected with the controller rod 23. Said controller rod 23 is provided with controller stops which as shown consist of adjustably mounted rings 29 and 30 each rovided with set bolts whereby they may be looked upon the rod 23 in any position to which they may be. adjusted. 'The masterlelement which as shown is in the form of a nut 7 having threaded engagement with the master screw 4 is provided with lateral extensions 8 and 9 apertured to receive guide rods 10 and 11 adapted to be fixed in the standards 2 and 3 and serving to prevent rotation of the nut 7 and permit longitudinal movement thereof upon 4. Said nut 7 is provided with transversely disposed openings or assages, preferably two in number in which two switch members preferably lnthe form f of bars 12and 13 are slidably mounted, said i preferably ably provided bars being so proportioned with respect to their length as to permit shifting bf the same into and out of engaging proximity with the stops 2,9 and 30. Said switch bars are desiron their upper faces with oppositely disposed rollers 14, 15, 16 and 17 as clearly shown in Fig. 2. A controller switch preferably in the form of a bar 19 is slidably "mounted in a longitudinally disposed slot 18 in the nut 7 which desirably communicates with the slots in which the switch bars are formed. Said switch 19 is provided on one side with cam extensions 20 and 21 and on its other side with a single cam extension 22 located between the,'extensions 20 and 21 with reference to the length of the switch19. Between the cams 20 and 21 and opposite the ends of the cam 22 the switch 19 is rovided with continuously smooth and un roken surfaces and the cams and switch and the rollers of the switch bars are so proortioned and disposed with respect to each other that when one of the rollers, say englaged by the cam 21 the other roller 17 wi engage the smooth opposite side of the bar 19. It will be obvious from the foregoing that as the switch bar 19 is shifted longitudinally lateral movement of the switch bars 12 and 13 will be efiected and the cam extensions are so dis osed that when one'of the switch bars is sh ed to an extreme osition in one direction the other of said ars will be shifted to an extreme position in an posite direction the purpose of which will hereinafter more fully appear. A stationary mounting preferably in the form of a supporting tie rod 31 is mounted in the standards 2 and 3 and is provided with switch stops desirably in the form of rings 32 and 33 provided with projections 34 and 35. Said switch stops are provided with set screws 66 and 67 whereby they may be locked in any desired adjusted position upon the rod 31.

By reference to Fig. 1 it will be noted that the projections 34 and 35 of said stops project into the ath of said switch 19 in a manner to effect ongitudinal movement thereof when the nut 7 approaches either of its extreme limits of travel. 7

' From the foregoing. it will be seen that there is provided, in connection with a master 0 crating member and an element driven there y and a sourceof power and a controller, means, preferably in the form of a switch, I for automatically operating the controller 26 to retract the same to a neutral or non-operatiriivg position.

e will next describe means whereby the throttle is automatically controlled by said master operating member and element.

The throttle 48 is provided with a valve stem 68 which is connected, preferably through the medium of a manually operable lever 47, with a connecting rod 46. Said rod 46 is connected at its other end with a throttle rod shaft 44 mounted in a bearing 69 and in a bracket'45 the latter being'secured to the standard 3. A lever 43 is secured near its center to the shaft'44 and at its ends is connected with the movably mounted throttle rods 41 and 42. The rod 41 is provided with a stop 50 preferably in the form of a rin having a set nut whereby it may belociied in any position u on the rod 41 to which it is adjusted. Sai rod 42 is provided with a stop 49 of similar construction to the stop 50 having a set nut 71.

A throttle switch desirably in the form of a bar 38 is mounted in a longitudinally disposed slot 37 formed in the nut 7 and is slidable therein. Said bar 38 is provided with oppositely disposed cam extensions 39 and 40 and said bar 38 opposite said extensions is provided with continuously smooth engaging surfaces. Immediatel above said slot 37 the nut 7 is transversei y slotted and there is mounted in said transverse slot at throttle switch bar 36 rovided with rollers 40 and 40 adapted or engagement with said extensions 39 and 40 and with the smooth surfaces opposite the same for a purpose hereinafter to be described.

A stationary mounting preferably in the form of a supporting tie rod 53 is mounted in the standards 2 and 3 and is provided with throttle switch stops in the form of rings 54 and 55 provided with projections 56 and 57 projecting into the path of the switch 38.

aid stops are as shown provided with set screws whereby they may be locked in adjusted positions.

In the present construction the parts are so adjusted that when the throttle is actuated toward a closing osition. it will not completely close but will admit a relatively reduced or limited amount of steam to. the engine for a purpose \vhich will hereafter more fully appear. It will however be un pose of this operation is to re and permit operationthereof by the operator p tion but merely to partially close the throttle. t

- or 72 position.

- ciprocate th'ejrod 42m a manner close the throttle 48.- This will mg movement of the 38 will engage the stop 56 and the continued.

derstood that the invention is not dependent 1 upon such adjustment of the parts, as comete cut ofl of the pressure fluid is not usually effected by closure of the throttle.

It will be obvious from the foregoing that as the switch 38 is reciprocated in opposite directions it will impart lateral movement to the switch bar 36 alternately moving the same into engaging proximity with the stops" 49 and 50. a

From the foregoing it will be seen that means, preferably device, is associated with the master actuating member and throttle in a manner to automatically con- 7 trol the same.

\ The operation is as follows. Assuming that the controller lever 26 occupies the 74 position, as shown'i-n Fig. 1,-whieh for conven ience will be assumed to be that position to, which the reversing gear is adjusted to drive the engine forwardly and lift the hoist bucket or cage, and thatthe throttle 48 is open, the travel in the 'dimaster element or,nut- 7 will rection indicated by the arrow 58, Fig. 3. By reference to Fig. 3 it will be seen that the switch bar 36 will engage the stop 49 and re-' to partially result' in an immediate reduction of speed of the" engine but inasmuch as the throttle is not com pletely closed the enginewill continue to run and hoist the cage. Subsequent to the clos throttle the switch bar forward movem nt of the nut 7 will eflect reciprocation of the bar 38 in the direction'of arrow 59 thereby. causing the cam 39 to shift the bar36 from the position shown in full lines, Fig. 3, to the position shown indotted lines so that the bar 36 will ing proximity with the sto 49. The purease the throttle.

by manually operating the handle 47 in casesuch further operation should be necessary.

It is not the object of lock the throttle-in a-closed or closing posiwhen the cage or object on the hoist rope approaches either of its extreme positions; It will be understood that when the parts are in the position just describedthe engine will continue tooperate, at afgreatly reduced speed, and that the deviceof the invention will act through the controller to bring the engine to a position of rest. p

As the nut 7 approaches the position just described the bar 12 will engage the stop 29, Fig. 2, and will reciprocate'the rod 23 in a manner to swing the lever 26 to theneut'ral This operation ;will lace the slide valve of the engine in a neutral po'sition and willcut ofl the admission of steam to the cylinders. It will be understood however in the form of a switching 'master element. andthe throttle will operate the engine. "This-will the lever 26 I gineer will be prevented be out of engag this invention to and that no movement of .tion, this reverse operation being in that the cage will not at this time have reached its extreme osition. It will also be understood that at t is point the momentum will serve to continue'to operate the parts and that the same may be arrested, if desired, by usual band-brake which however forms no feature of the resent invention andis not herein shown. 1% breakage is not applied the momentum of the parts subsequent to the return of the lever 26 to a neutral position will be suflicient to effect engagement of the bar 19 with the stop 34 so that the cam 20 will shift the bar 12 from the osition shown infulllines to the position shbwn in dotted lines, and the cam 22 will shift thego bar 13-from the position shown in full lines to'that-sh'own in dotted lines. The bar 12 will now be out of engaging roximity- 'with the stop 29 and the bar 13 will be in the path thereof. Now inasmuch as the cagehas not reached its extreme limit of travel it possible to obtain .a slight further movement of thecage, which may under certain condi-, tions be desirable; and the lever 26 is for this reason free to be thrown from the 72 to the 74 position. Assuming now that the engineer desires to raise the cage he will again throw the lever 26 to the 74 position and the steam passing through the partially closed.

result in the nut 7 traveling farther in thc direction of the arrow 58 and as the bar l3approaches the stop 29 and engages the same will again be thrown from the 74. to the 72 position which will indicate that hoist bucket or cage has reached the extreme e limit of travel. It is the object of this invent'ion to at this time. lock the lever-26 the 72 or neutral position so that the enfrom swinging the 05 lever again toward the 74 position as it will" be readilyseen-that such movement of the lever 26 would be prevented by engagement-- he stop 29with the bar 13. Thus it will be seen that the lever thrown and locked in a neutral or 72 position the lever can be ef-' reverse or 75 posifected except. toward the When the lever 26 is thrown to the 75 p0- 1'15 sition the direction of operation of the'parts' .willbe reversed and the bar 134will first engage the stop 30 to effect the first out off of steam' through the controller and subsequently the bar 12. wilL-be thrown into engaging proximity with the stop 30, by engagement of the bar 19 with the stop 33, to' effect the final cut ofl of steam andthe locking of the lever26in the neutral or 72 posiall re,- spects the sameas the operation heretofore described. f

In the constructionsshown it will be obvious that after the throttle has been closed it Wlllbe necessary. for the engineer, when rei 26 is now finally i10 engine,

versing, to open the throttle by means of the lever 47.

' 1 It will be obvious that all of the objects of be obtained by the automatic means acting through the controller and stoppage of the cage itself at the desired-point could be effected by the usual band-brake mechanism.

However it will be understood that it is preferable to partially or fully close the throttle when the cage approaches its limit of travel so as to insure a relatively reduced speed prior. to complete stoppage of the cage" and in view of the further fact that the en- ;gine is steadied and the cut oil bythe controller is made with less strain upon the parts through a partial closing of the throttle.

Having now fully described our said in vention what we claim and desire to secure by Letters Patent isz' 1. "A controlling device for hoisting apparatus comprising in combination, a master screw driven from the hoisting engine, a master nut operated by said screw, a reversing gear controller for said engine, a movable controller rod connected with said controller and provided with adjustable stops, movable switch bars carried by said nut and adapted for engagementwith said stops, a controller switch carried by said nut for throwing said bars into engagement with said stops, and stationary stops for operating said switch.

2. A controlling device for hoisting apparatus comprising in combination, a master screw driven from the hoisting engine, a master nut operated by said screw, a reversing gear controller for said engine, movable switch bars carried by said nut, a controller switch carried by said nut for operating said bars, means for operating said switch, and

'means whereby said switch bars "operate said controller."

3. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting amaster element operated by said member, a controller for the reversing gear of said engine, and mechanism carried by said element for returning said controller from an operating to a non-operating position leaving said controller free, said mechanism serving subsequently to return and lock said controller in a non-operating position. V 4. A controlling device for hoisting apparatus comprising in combination, a master screw, a master nut operated thereby, .a throttle for the hoisting engine, oppositely movable articulated throttle rods provided with stops and connected with said throttle,

a throttle switch carried by said nut, stationary stops adapted to throw said switch, and

a switch member carried by said element and operated by said switch to engage said rod stops whereby said throttle may be operated. v

5. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element operated by said member, a controller for the reversing gear of the engine, a throttle for the engine, switch mechanism carried by said element for operating said controller, and switch mechanism carried by said element for operating said throttle. g i

6. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element operated by said member, a controller for the reversing gear of the engine, a throttle for the engine, controller switch mechanism carried by said element 'for operating said controller and comprising a switch and switch members, and throttle switch mechanism carried by said element for operating said throttle and -com prising a switch and a switch member.

7. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element operated by said member, a controller for said engine, and mechanism carried by said element for returning said controller from an operating to a neutral position, said mechanism serving upon subsequent movement of said controller to its initial position to again return the same to a neutral position.

8. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the engine, a master element operated by said member, a controller for the reversing gear of the engine, a throttle for the engine, mechanism mounted on said element for operating said controller, and mechanism mounted on said element for operating said throttle.

9. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element o)erated by said member, a controller for the ermine, and switch mechanism carried by said element for operating said controller and comprising a controller switch operating in the direction of travel of said element and a plurality of switch bars operated by said controller switch and movable in a direction angular to the direction of travel of said element.

10. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element 0 erated by said member, a controller for t 1e engine, and switch mechanism carried by said element for operating said controller and comprising engine, a master element 0 a controller switch and-a plurality of switch a said bars and switch r0 bars operated thereby, being movable in directions angular with respect to each other.

11. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element 0 erated by said member, a controller-for t e engine, and switch mechanism carried by said element for operating said controller and comprising a controller bars.

12. A controlling deviceforhoisting apparatus comprising in combination, a master operating member driven from the hoisting erated by said member, a controller fort e engine, and switch mechanism actuated by said element for operating said controller and comprising a plurality of switch barsand a controller switch provided with cams for actuating said ars.

13. A controlling, device for hoisting apparatus comprising incombination, a master operating member driven from the hoisting engine, a master element o erated by said member, a controller for t e engine, and switch mechanism carried by said element for operating said controller switch and a plurality of switch engine, a master element and comprising.

provided with providedwith engage said rollers tooperl'urality of switch bars llbrs and a controller switch cams adapted to ate said bars.

14. A controlling device for hoisting apparatus comprising in combination, a master operating member driven from the hoisting engine, a master element operated by sai member, a throttle for the engine, and switch mechanism carried by said element for operating switch and a switch bar, said switch and bar operating in directions angular with respect to. each other. d

15. A controlling device for hoisting apparatus, comprising. in combination, a master operating member driven from the hoisting operated by said member, a throttle for the engine, and switch mechanism carried ,by said element for oper-' ating said throttle and comprising athrottle switch provided with cams and a switch bar provided with rollers operated by saidcams.

said throttle and comprising a throttle In testimony whereof we have hereunto set v our hands in presence of two witnesses. CARL NOTBOHM.

HEINRICH EIGEMANN Witnesses:

ALFRED POHLMEYER, M. ENGELS. 

